This is a rebuild of Drinking Water Watch and not yet the official record. Use the agency’s current Drinking Water Watch for anything you need to rely on.
Chemical and radiological sample results
MS0760044 , Delta Branch Experiment Sta
22 of the 53 analytes this system has been tested for have been detected at least once, across 176 samples on record.
The other 31 were tested for and never found. An analyte is counted here if any result on record measured it, so this covers the whole history and not the samples listed below.
Across all 176 samples on record, detections range from November 3, 2003 to August 2, 2026. These figures cover the whole record.
What counts as a non-detect is defined in the help: Less than Indicator. This system’s violations.
What has been detected, ever
Every analyte measured above its reporting level at any point in this system’s record, most often detected first. This is not limited to the samples listed below.
| Analyte | Kind | Detected in | First detected | Last detected |
|---|---|---|---|---|
| Copper, Free 1022 | Inorganic Chemical | 69 of 69 results | Jul 12, 2007 | Aug 12, 2025 |
| Lead 1030 | Inorganic Chemical | 37 of 69 results | Jul 12, 2007 | Aug 12, 2025 |
| TTHM 2950 | Organic Chemical | 27 of 27 results | Sep 20, 2004 | Mar 28, 2023 |
| Total Haloacetic Acids (Haa5) 2456 | Organic Chemical | 24 of 26 results | Nov 17, 2004 | Oct 3, 2022 |
| Chloroform 2941 | Organic Chemical | 17 of 18 results | May 22, 2006 | Aug 16, 2017 |
| Barium 1010 | Inorganic Chemical | 11 of 11 results | Nov 3, 2003 | Aug 2, 2026 |
| Dichloroacetic Acid 2451 | Organic Chemical | 11 of 11 results | Feb 26, 2008 | Aug 16, 2017 |
| Chromium 1020 | Inorganic Chemical | 9 of 11 results | Nov 3, 2003 | Aug 2, 2026 |
| Fluoride 1025 | Inorganic Chemical | 9 of 11 results | Nov 3, 2003 | Aug 2, 2026 |
| Bromodichloromethane 2943 | Organic Chemical | 9 of 18 results | May 22, 2006 | Aug 8, 2011 |
| Dibromochloromethane 2944 | Organic Chemical | 8 of 18 results | Aug 14, 2006 | Aug 8, 2011 |
| Nickel 1036 | Inorganic Chemical | 3 of 10 results | Nov 3, 2003 | May 29, 2013 |
| Arsenic 1005 | Inorganic Chemical | 2 of 11 results | Apr 12, 2004 | Mar 31, 2025 |
| Trichloroacetic Acid 2452 | Organic Chemical | 2 of 11 results | Feb 26, 2008 | Jun 3, 2008 |
| Selenium 1045 | Inorganic Chemical | 2 of 11 results | Apr 12, 2004 | Apr 17, 2006 |
| Sodium 1052 | Inorganic Chemical | 1 of 1 result | Apr 3, 2023 | Apr 3, 2023 |
| Monochloroacetic Acid 2450 | Organic Chemical | 1 of 11 results | Jul 21, 2014 | Jul 21, 2014 |
| Dibromoacetic Acid 2454 | Organic Chemical | 1 of 11 results | Aug 8, 2011 | Aug 8, 2011 |
| Bromoform 2942 | Organic Chemical | 1 of 18 results | Aug 8, 2011 | Aug 8, 2011 |
| Monobromoacetic Acid 2453 | Organic Chemical | 1 of 11 results | Feb 5, 2009 | Feb 5, 2009 |
| Nitrite 1041 | Inorganic Chemical | 1 of 21 results | Jul 28, 2008 | Jul 28, 2008 |
| Sulfate 1055 | Inorganic Chemical | 1 of 2 results | Nov 3, 2003 | Nov 3, 2003 |
No date range is applied: this list draws on every sample on record. Show the last two years only.
The most recent samples, result by result
The table below lists 51–60 of 176 samples, newest first — collected October 24, 2018 to May 20, 2019. The summary above covers all 176.
19 results from the 10 samples listed here: 11 detected, 8 not detected. Across the whole record it is 247 of 665. A sample is analysed for many analytes at once, so one sample appears on as many rows as it had results.
| Result | Analyte | Monitoring period |
|---|---|---|
|
||
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 20, 2019 04:10, sampling point TF101 | Mercury 1035 EPA method 200.8 | Jan 1, 2017 – Dec 31, 2019 |
|
||
| 0.0302 mg/l , sample collected Oct 24, 2018 04:30, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jul 1, 2018 – Dec 31, 2018 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 24, 2018 04:30, sampling point DS000 | Lead 1030 EPA method 200.8 | Jul 1, 2018 – Dec 31, 2018 |
|
||
| 0.1699 mg/l , sample collected Oct 24, 2018, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jul 1, 2018 – Dec 31, 2018 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 24, 2018, sampling point DS000 | Lead 1030 EPA method 200.8 | Jul 1, 2018 – Dec 31, 2018 |
|
||
| 0.025 mg/l , sample collected Oct 24, 2018 07:48, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jul 1, 2018 – Dec 31, 2018 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 24, 2018 07:48, sampling point DS000 | Lead 1030 EPA method 200.8 | Jul 1, 2018 – Dec 31, 2018 |
|
||
| 0.0515 mg/l , sample collected Oct 24, 2018 07:31, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jul 1, 2018 – Dec 31, 2018 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 24, 2018 07:31, sampling point DS000 | Lead 1030 EPA method 200.8 | Jul 1, 2018 – Dec 31, 2018 |
|
||
| 0.0405 mg/l , sample collected Oct 24, 2018 06:00, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jul 1, 2018 – Dec 31, 2018 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 24, 2018 06:00, sampling point DS000 | Lead 1030 EPA method 200.8 | Jul 1, 2018 – Dec 31, 2018 |
|
||
| 0.0081 mg/l , sample collected Oct 24, 2018 07:48, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jul 1, 2018 – Dec 31, 2018 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 24, 2018 07:48, sampling point DS000 | Lead 1030 EPA method 200.8 | Jul 1, 2018 – Dec 31, 2018 |
|
||
| 0.1178 mg/l , sample collected Oct 24, 2018, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jul 1, 2018 – Dec 31, 2018 |
| 0.0051 mg/l , sample collected Oct 24, 2018, sampling point DS000 | Lead 1030 EPA method 200.8 | Jul 1, 2018 – Dec 31, 2018 |
|
||
| 0.3135 mg/l , sample collected Oct 24, 2018 07:01, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jul 1, 2018 – Dec 31, 2018 |
| 0.0031 mg/l , sample collected Oct 24, 2018 07:01, sampling point DS000 | Lead 1030 EPA method 200.8 | Jul 1, 2018 – Dec 31, 2018 |
|
||
| 0.0321 mg/l , sample collected Oct 24, 2018 07:30, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jul 1, 2018 – Dec 31, 2018 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 24, 2018 07:30, sampling point DS000 | Lead 1030 EPA method 200.8 | Jul 1, 2018 – Dec 31, 2018 |
-
- Collected
- May 20, 2019 04:10
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- 190521-036IN
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2017 – Dec 31, 2019
-
Mercury 1035 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Oct 24, 2018 04:30
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 181025-130PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jul 1, 2018 – Dec 31, 2018
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0302 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Oct 24, 2018
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 181025-129PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jul 1, 2018 – Dec 31, 2018
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.1699 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Oct 24, 2018 07:48
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 181025-128PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jul 1, 2018 – Dec 31, 2018
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.025 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Oct 24, 2018 07:31
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 181025-127PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jul 1, 2018 – Dec 31, 2018
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0515 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Oct 24, 2018 06:00
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 181025-126PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jul 1, 2018 – Dec 31, 2018
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0405 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Oct 24, 2018 07:48
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 181025-124PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jul 1, 2018 – Dec 31, 2018
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0081 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Oct 24, 2018
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 181025-123PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jul 1, 2018 – Dec 31, 2018
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.1178 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0051 mg/l
-
- Collected
- Oct 24, 2018 07:01
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 181025-122PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jul 1, 2018 – Dec 31, 2018
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.3135 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0031 mg/l
-
- Collected
- Oct 24, 2018 07:30
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 181025-121PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jul 1, 2018 – Dec 31, 2018
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0321 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
Routine (10).